body.modal-open {
    position: fixed;
    width: 100%;
}
.header{
    position: fixed;left: 0;right: 0;top: 0; z-index: 999;
    .inner{
        position: relative;z-index: 100;
        max-width: 2560px;margin-left: auto;margin-right: auto;
        padding: 30px 60px 30px 60px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    &::after{
        content: '';
        position: absolute;left: 0;top: 0;right: 0;bottom: 0;background-color: #383A42;
        z-index: 1;
        transform: translate3d(0,-150%,0);
        transition: all .375s ease-in;
    }
    &.scrolling{
        &::after{
            transform: translate3d(0,0,0);
        }
    }
}
.m-nav-switch{display: none;}
.logo{
    width: 183px;height: 31px;background: url(../images/logo@2x.png) no-repeat;
    background-size: 100% auto !important;
    display: inline-block;
}
.nav{
    ul{
        display: flex;
    }
    li{
        line-height: 44px;position: relative; font-size: 18px;cursor: pointer;
        a{
            color: #fff;display: inline-block;padding: 0 40px;position: relative;
            &.first-level-menu::after{
                content: '';
                width: 6px;height: 6px;background-color: var(--main-color);
                position: absolute;left: 50%;margin-left: -3px;bottom: 0;
                border-radius: 50%;
                transform: scale(0);opacity: 0;
                transition: all .275s linear;
            }
            &.first-level-menu{
                display: flex;
                align-items: center;
                .icon-arrow-d{
                    margin-left: 5px;
                }
            }
        }
        .m-drop-arrow{
            display: none;
        }
        &.drop-menu{
            &:hover{
                .drop-content{
                    opacity:1;
                    transform: translate3d(0,0,0);
                    height: auto; overflow: initial;
                }
            }
        }
        .drop-content{
            width:370px;height: 0; overflow: hidden;
            transition: transform .275s ease-in,opacity .375s linear;
            opacity:0;
            transform: translate3d(0,25%,0);
            padding-top: 5px;
            position: absolute;left: 50%; margin-left: -80px; top: 43px;
            .item{
                width:160px;
                background-color: #383e4c;line-height:60px;position: relative;cursor: pointer;
                &:last-child{
                    border-bottom: none;
                }
                >a{
                    color: rgba(255,255,255,0.5);padding: 0 0 0 35px;display: flex;
                    align-items: center;
                    .txt{
                        margin-right: 10px;
                    }
                    .icon-arrow-r{
                        opacity: 0.5;
                    }
                }
                .drop__cont{
                    width: 0;
                    overflow: hidden;
                    position: absolute; background-color: #282c37; left: 100%;
                    a{
                        width: 208px;box-sizing: border-box;display: block;color: rgba(255,255,255,0.5);
                        padding-left: 35px;
                        &:last-child{
                            border-bottom: none;
                        }
                        &.current,
                        &:hover{
                            background-color: #2b3d4b;
                            color: var(--color-blue);
                        }
                    }
                }
                
                @for $i from 1 through 4 {
                    &:nth-child(#{$i}){
                        .drop__cont{
                            top: -60px*$i + 60px;
                        }
                    }
                }
                &.current,
                &:hover{
                    background-color: #394b5f;
                    >a{
                        color: var(--color-blue);
                        .icon-arrow-r{
                            background-position: -9px 0;opacity: 1;
                        }
                    }
                    .drop__cont{
                        width: 208px;
                        transition: all .275s ease-in;               
                    }
                    
                }
                
            }
        }
        &.lang-switch{
            margin-left: 30px;
            >a{
                padding-right: 0;
            }
            &::after{
                content: '';
                width: 1px;height: 14px;background-color: #fff;opacity: 0.8;
                position: absolute;left: -15px;top: 50%;transform: translate(0,-50%);
            }
        }
        &.current,
        &:hover{
            a{
                color: var(--main-color);
                .icon-arrow-d{
                    transform: rotate(180deg);
                }
                &.first-level-menu::after{
                    transform: scale(1);opacity: 1;
                }
                
            }
        }
    }
}

.icon-arrow-d{
    width: 14px;height: 6px;background: url(../images/icon-arrow-d.png) no-repeat;
    background-size: cover;
    display: inline-block;
    transition: all .275s ease-in;
}
.icon-arrow-r{
    width: 9px;height: 14px;background: url(../images/icon-arrow-r.png) no-repeat;
    background-size: 18px 14px;
    display: inline-block;
}

.wrap-box{
    width: 1440px;margin-left: auto;margin-right: auto;position: relative;z-index: 21;
}

.wrap-box-1200{
    max-width: 1200px;margin-left: auto;margin-right: auto;position: relative;z-index: 21;
    padding: 0 25px;
}

.green,a.green{
    color: var(--main-color) !important;
}
a.green{
    &:hover{
        text-decoration: underline;
    }
}

.blue{
    color: var(--color-blue) !important;
}

.footer{
    max-width: 2560px;min-height: 100vh; margin-left: auto;margin-right: auto;position: relative;
    display: flex;
    justify-content: center;
    align-items:center;
    .copyright{
        width: 100%;box-sizing: border-box;padding:0 25px;
        text-align: center;transform: translate(-50%,0);
        position: absolute;left: 50%;bottom: 20px;z-index: 10;
    }
    .lattice-5{
        right:-180px;top:-200px;
    }
    .lattice-6{
        left:-108px;top: -120px; z-index: 2;
    }
    .lattice-group{
        top: 24%;right:36%;z-index: 1;
    }  
    .wrap-box{
        z-index: 20;
    }
    .video-bg{
        top: 50%;
        &::after{
            content: '';position: absolute;top: 0;width: 100%;height:58%;left: 0;z-index: 2;
            background: linear-gradient(180deg,rgba(36,40,49,1) 3%,rgba(36,40,49,0)  94%);
        }
    }
}
.footer-cont{
    display: flex;
    justify-content: space-between;
    // padding-bottom:13vw;
    padding-bottom:100px;
    .infor-box{  
        width: 310px;
        .WX-code{
            max-width: 135px;margin-top:35px;text-align: center;
        }
    }
}
.form-box{
    width:72.25%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    .form-item{
        width: 50%;
        box-sizing: border-box;
        padding-right:60px;
        margin-bottom: 18px;
        &.textarea-item{
            width: 100%;
        }
        .label{
            display: block;padding-bottom: 6px;
        }
        .tel-item{
            position: relative;
            i{
                position: absolute;top: 50%;transform: translate(0,-50%);
            }
            .input{
                padding-left: 50px;
            }
        }
        .input{
            width: 100%;box-sizing: border-box;padding: 15px 0;font-size:var(--f-size-20);color: #fff;
            background: transparent;
            border: none;
            border-bottom: 1px rgba(255,255,255,0.6) solid;
            &::placeholder{
                color:rgba(255,255,255,0.7);
            }
            &::-webkit-input-placeholder{
                color:rgba(255,255,255,0.2);
            }
        }
        .select-item{
            width: 100%;
            .select-text{
                padding: 12px 0;
            }
        }
        .textarea{
            width: 100%;min-height: 100px; border: 1px rgba(255,255,255,0.6) solid;background: none;box-sizing: border-box;
            padding: 10px;color: #fff;font-size: var(--f-size-20);
        }
    }
}

.mobile-show{
    display: none !important;
}
.mobile-hide{
    display: block !important;
}

.contact-infor-tabbox{
    .infor-tab-nav{
        padding-top:35px;padding-bottom:12px;
        .item{
            cursor: pointer;padding: 0 25px;display: inline-block; position: relative;
            &:first-child{
                padding-left: 0;
                &::before{
                    display: none;
                }
            }
            &::before{
                content: '';
                width: 1px;background-color: rgba(255,255,255,0.3);
                position: absolute;left: 0;top:3px;bottom:3px;
            }
        }
        .active{
            color: #fff;font-size: 1.25em;
        }
    }
}

.select-item{
    position: relative;
    .select-text{
       display: block;box-sizing: border-box;border-bottom: 1px rgba(255,255,255,0.6) solid;color: #fff;position: relative;
       cursor: pointer;
       &::after{
        content: '';
        width: 32px;height:17px;background-image: url(../images/arrow-d@2x.png);background-repeat: no-repeat;background-size: cover;
        position: absolute;right: 0;top: 50%;margin-top: -8px;opacity: 0.5;
        transition:transform .275s linear;
       }
    }
    &.opened{
        .select-text{
            &::after{
                transform:rotate(180deg);
            }
        }
        .select-options{
            transform: scaleY(1);
        } 
    }
    .select-options{
        background-color:#383e4d;
        transform: scaleY(0);
        transform-origin: top center;
        transition:transform .275s linear;
        position: absolute;left: 0;right: 0;
        li{
            cursor: pointer;padding:6px 15px;color:#a9aaad;margin-bottom:1px;
            &.selected,
            &:hover{
                background-image: url(../images/icon-confirm.png);
                background-repeat: no-repeat;
                background-size: 32px 32px;
                background-position: right center;
                background-origin: content-box;
                background-color: #384c5f;color: var(--main-color);
            }
        }
    }
}

.bot-logo{
    width: 200px;display: block;
}


.top-banner{
    max-width: 2560px;height: 100vh; min-height: 600px; position: relative; margin: 0 auto;
    overflow: hidden;
    background-repeat: no-repeat;
    background-position: right bottom;
    background-size: cover;
    // @each $name in banner-index, banner-about, banner-case, banner-motivation, banner-service {
    //     &.#{$name} {
    //         background-image: url("../images/#{$name}.jpg");
    //     }
    // }
    .wrap-box{
        height: 100%;
        display: flex;
        align-items: center;
        z-index: 10;
    }
    .inner-cont{
        font-size:var(--f-size-60);position: relative;
        h3{
            font-size:inherit; color: #fff;font-weight: bold;padding-bottom: 0.675em;position: relative;z-index: 32;
        }
        .en{
            font-size: 0.6em;line-height: 1.1;font-weight: 300;
            position: relative;
            z-index: 32;
        }
        .zh{
            width: 690px;
            font-size: 0.535em;line-height: 1.4;font-weight: 300;
            position: relative;
            z-index: 32;
        }
        .lattice-group{
            left:39.5%;top: -160px;
        }
    }
    .lattice-1{
        left: 3.125%;bottom:0;
    }
    .lattice-2{
        right:3.125%;bottom: 8.611%;
    }
    .lattice-item3{
        left: 8.615%;bottom: 15.74%;
    }
    &.banner-index{
        .lattice-group{
            top: 20%;left: 29.65%;
        }
    }
    &.banner-about{
        .lattice-1{
            bottom:auto;top: 150px;
        }
        .lattice-2{
            right:0;bottom: 0;
        }
        .lattice-4{
            left: 17.7%;bottom:13%;
        }
        .lattice-5{
            right: 9.375%;top: 19.375%;
        }
        .lattice-group{
            top: 20%;left: 29.65%;
        }
    }
    &.banner-news{
        height: 31.25vw;min-height: 500px;
        background-image: url(../images/banner-news.jpg);
        background-position: bottom center;
        .lattice-5{
            left: 5.375%;top: 30%;
        }
    }
    &.banner-service{
        .lattice-group1{
            top: 22.22%;left: -137px;
        }
        .lattice-group2{
            left: 4.85%;bottom: 6.85%;
        }
        .lattice-1{
            left:19.85%;bottom: 8.85%;
        }
        .lattice-2{
            bottom: auto;top: 20%;right: -160px;
        }
        .lattice-5{
            right: -14px;bottom: 20.37%;
        }
        .lattice-6{
            right: 32.916%;bottom:18.15%;
        }
    }
    &.case-details-banner{
        height: 31.25vw;
        min-height: 500px;
        background-image: url(../images/case/detais-top.png);
        .lattice-5{
            top:25%;right: 0;
        }
    }
    .video-bg{
        &::after{
            content: '';
            position: absolute;width: 100%;height: 20%;min-height: 80px; left: 0;bottom: 0;z-index: 2;
            // background: linear-gradient(180deg,rgba(36,40,49,1),rgba(36,40,49,0));
            background: linear-gradient(180deg, rgba(36,40,49,0.00) 3%, #242831 94%);
        }
    }
}
.top-banner.banner-case,
.motivation-swiper .swiper-slide .top-banner.banner-motivation{
    .lattice-1{
        left: 10%;bottom:calc(50% - 165px);
    }
    .lattice-2{
        right: -50px;
    }
    .lattice-4{
       bottom: 16%;left: 19.6875%;
    }
    .lattice-5{
        right: 5.3125%;top: 15.74%;
    }
    .lattice-6{
        top: 25%;left: 58.82%;
    }
    .wrap-box{
        .lattice-5{
            right: -130px;
        }
    }
    .inner-cont .lattice-group{top: -100px;}
}

.cont-til60{
    font-size:var(--f-size-60);color: #fff;font-weight: bold;
}

.paging-box{
    .item{
        padding: 10px;
        &.current,
        &:hover{
            color: var(--main-color);
        }
    }
    a.page-prev,
    a.page-next{
        position: relative;
        .icon{
            width: 40px;height: 40px;position: absolute;top: 50%;margin-top:-20px;
            background: url(../images/icon-back.png) no-repeat center center;
            background-size: cover !important;
        }
        &:hover{      
            .icon{
                background: url(../images/icon-back-hover.png) no-repeat center center;
            }
        }
    }
    a.page-prev{
        padding-left: 40px;
        .icon{
            left: 0;
        }
    }
    a.page-next{
        padding-right: 40px;
        .icon{
            right: 0;transform: rotate(180deg);
        }
    }
}

.mb80{
    margin-bottom: 80px !important;
}
.mb120{
    margin-bottom: 120px !important; 
}
.pb20{
    padding-bottom: 20px !important;
}


// 点阵元素修饰背景
.lattice-1{
    width: 231px;height: 331px;background: url(../images/lattice-1.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-2{
    width: 346px;height:227px;background: url(../images/lattice-2.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-3{
    width: 151px;height:151px;background: url(../images/lattice-3.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-4{
    width: 220px;height:52px;background: url(../images/lattice-4.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-5{
    width: 151px;height:151px;background: url(../images/lattice-5.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-6{
    width: 100px;height:52px;background: url(../images/lattice-6.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-7{
    width: 70px;height:70px;background: url(../images/lattice-7.png) no-repeat;display: inline-block;z-index:5;
}
.lattice-8{
    width: 144px;height:70px;background: url(../images/lattice-8.png) no-repeat;display: inline-block;z-index:5;
}

.lattice-group{
    width: 240px;
    position: absolute;
    &.w144{
        width: 144px;
    }
    &.w120{
        width: 120px;
        &.static{
            .grid{
                span{
                    opacity: 0.9;
                    &:nth-child(6),
                    &:nth-child(7),
                    &:nth-child(8),
                    &:nth-child(11),
                    &:nth-child(12),
                    &:nth-child(13){
                        opacity: 0.5;
                    }
                }
            }
        }
    }
    .grid{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        z-index: 10;
        span{
            width: 4px;height:4px;margin: 10px; border-radius: 50%; background-color: #fff;opacity: 0.6; display:block;
            &.el:nth-child(4),
            &.el:nth-child(26){
                background-color: var(--color-blue); 
            }
            &.el:nth-child(15),
            &.el:nth-child(16){
              background-color: var(--main-color);
            }
        }
    }
    .grid.shadow{
        opacity: 0.1;position: absolute;z-index: 0;top: 0;left: 0;
    }
}

.icon-left-btn,
.icon-right-btn{
    width: 40px;height: 40px;display: inline-block;cursor: pointer;background-size: cover;background-repeat: no-repeat;
}
.icon-left-btn{
    background-image: url(../images/icon-left-btn.png);
}
.icon-right-btn{
    background-image: url(../images/icon-right-btn.png);
}

@keyframes opacityAni {
    0%{
        opacity: 0;
        transform: scale(0);
    }
    100%{
        opacity: 0.5;
        transform: scale(1);
    }
}

.ani-delay-125{
    transition-delay: 0.125s !important;
}
.ani-delay-25{
    transition-delay: 0.25s !important;
}
.ani-delay-375{
    transition-delay: 0.375s !important;
}
.ani-delay-5{
    transition-delay: 0.5s !important;
}
.ani-delay-625{
    transition-delay: 0.625s !important;
}
.ani-delay-75{
    transition-delay: 0.75s !important;
}
.ani-delay-875{
    transition-delay: 0.875s !important;
}
.ani-delay-10{
    transition-delay: 1s !important;
}
.ani-up-in,
.ani-up-in2,
.ani-down-in2,
.ani-left-in,
.ani-left-in2,
.ani-right-in,
.ani-right-in2,
.ani-up-in-100{
    transition: transform .75s ease,opacity 1s linear;opacity: 0;
}

.ani-left-in{
    transform: translate3d(-100%,0,0)
}
.ani-left-in2{
    transform: translate3d(-50%,0,0)
}
.ani-right-in{
    transform: translate3d(100%,0,0)
}
.ani-right-in2{
    transform: translate3d(50%,0,0)
}
.ani-down-in2{
    transform: translate3d(0,-50%,0)
}
.ani-up-in{
    transform: translate3d(0,100%,0)
}
.ani-up-in2{
    transform: translate3d(0,50%,0)
}
.ani-up-in-100{
    transform: translate3d(0,120px,0)
} 

.ani-opacity-in{
    opacity: 0;transition: all 1s ease-in;
}
.ani-scale-in{
    transition: all .75s ease-in;transform: scale(0);
}
.active{
    .ani-up-in,
    .ani-up-in2,
    .ani-down-in2,
    .ani-left-in,
    .ani-left-in2,
    .ani-right-in,
    .ani-right-in2,
    .ani-up-in-100{
        transform: translate3d(0,0,0) !important;opacity: 1 !important;
    } 
    .ani-opacity-in{
        opacity: 1 !important;
    }
    .ani-scale-in{
        transform: scale(1);
    }  
}
.video-bg{
    position: absolute;top: 0;left: 0;bottom: 0;right: 0; z-index: 0;overflow: hidden;
    .video {
        height: 100%;width: 100%; line-height: 0; object-fit: cover; //cover
        pointer-events: none;
        /*灰色调*/
        /*-webkit-filter:grayscale(100%)*/
    }
}

@media screen and (max-width:1600px) {
    :root{
        --f-size-18:14px;
        --f-size-20:16px;
        --f-size-25:20px;
        --f-size-30:24px;
        --f-size-48:40px;
        --f-size-50:40px;
        --f-size-60:48px;
        --f-size-80:58px;
    }
    .header{
        .inner{
            padding: 18px 60px 18px 60px;
        }
    }
    .nav{
        li{
            font-size: 16px;
        }
    }
    .logo{
        width: 147px;height: 25px;
    }
    .wrap-box{
        width: 1200px;
    }

}

@media screen and (max-width:1440px) {
    :root{
        --f-size-20:14px;
        --f-size-30:20px;
        --f-size-48:32px;
        --f-size-50:32px;
        --f-size-60:40px;
        --f-size-80:72px;
    }
    .header{
        .inner{
            padding: 12px 60px 12px 60px;
        }
    }
    .logo{
        width: 110px;height: 19px;
    }
    .wrap-box{
        width: 1080px;
    }
    .wrap-box-1200{
        max-width: 1080px;
    }
    .icon-left-btn,
    .icon-right-btn{
        width: 30px;height: 30px;
        background-size: 24px 24px;
        background-position: center center;
    }
    .nav{
        li{
            font-size: 14px;
            >a{
                padding: 0 30px;
            }
            &.lang-swith{
                &::after{
                    height: 12px;
                }
            }
        }
    }
    .footer-cont{
        margin-bottom: 120px;
        .infor-box{
            width: 260px;
        }
    }
    .top-banner{
        .wrap-box{
            .inner-cont{
                h3{
                    line-height: 1.4;
                }
            }
        }
    }
    .top-banner.banner-case,
    .motivation-swiper .swiper-slide .top-banner.banner-motivation{
        .lattice-1{
            left: -20px;
        }
    }
    .footer{
        .lattice-5{
            right:0;top: 50px;
        }
        .lattice-6{
            left:-30px;
        }
    }
    .select-item{
        .select-text{
           &::after{
            width: 16px;height:9px;
            margin-top: -4px;
           }
        }
        .select-options{
            li{
                &.selected,
                &:hover{
                    background-size: 16px 16px;
                }
            }
        }
    }
}

@media screen and (max-width:1080px) {
    .wrap-box{
        width: 100%;padding: 0 25px;box-sizing: border-box;
    }
    .header{
        .inner{       
            padding: 12px 25px 12px 25px;
        }
    }
    .nav{
        li{
            >a{
                padding: 0 20px;
            }
        }
    }
}
@media screen and (max-width:920px) {
    .nav{
        li{
            font-size: 14px;
            >a{
                padding: 0 15px;
            }
        }
    }
}

@media screen and (max-width:768px) {
    :root{
        --f-size-18:13px;
        --f-size-20:14px;
        --f-size-25:18px;
        --f-size-30:18px;
        --f-size-48:24px;
        --f-size-50:24px;
        --f-size-60:32px;
        --f-size-80:60px;
    }
    .mb80{
        margin-bottom: 40px !important;
    }
    .mb120{
        margin-bottom: 7.8125vw !important; 
    }
    .icon-left-btn,
    .icon-right-btn{
        background-size: 20px 20px;
    }
    .mobile-show{
        display: inline-block !important;
    }
    .mobile-hide{
        display: none !important;
    }
    .motivation-page{
        .header{
            &::after{
                transform: translate3d(0,-150%,0);
            }
            &.scrolling{
                &::after{
                    transform: translate3d(0,0,0);
                }
            }
        }
    }
    .header{
        .inner{
            padding: 21px 25px 20px 25px;
        }
        &::after{
            transform: translate3d(0,0,0);
        }
        &.opened{
            .m-nav-switch{
                .item{
                    &:nth-child(2){
                        transform: translate(5px,5px);
                    }
                    &:nth-child(4){
                        transform: translate(5px,-5px);
                    }
                    &:nth-child(6){
                        transform: translate(-5px,5px);
                    }
                    &:nth-child(8){
                        transform: translate(-5px,-5px);
                    }
                }        
            }
            .nav{
                transform: translate3d(0,0,0);
            }
        }     
    }
    .logo{
        // width: 122px;height: 21px;
        position: relative;z-index: 900;
    }
    .m-nav-switch{
        width: 30px;height: 30px;padding: 7px;
        position: absolute;right: 10px;top:8px;z-index:850;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        .item{
            width: 4px;height: 4px;margin:3px; display: inline-block;border-radius: 50%;background: #fff;
            transition: transform .275s ease-in;
            &:nth-child(1),
            &:nth-child(2),
            &:nth-child(4){
                opacity: 0.3;
            }
            &:nth-child(5),
            &:nth-child(8){
                background: var(--main-color);
            }
            &:nth-child(6),
            &:nth-child(9){
                background: var(--color-blue);
            }
        }
    }
    .nav{
        position: fixed;top: 0;right: 0;bottom: 0;left: 0;z-index: 800;
        transform: translate3d(100%,0,0);
        transition: transform .275s ease-in;
        background: url(../images/m-nav-bg.png) no-repeat bottom center #363944;
        background-size: 100% auto;
        ul{
            position: absolute;top: 80px;left: 0;right: 0;bottom:160px;
            padding-left: 20px;padding-right: 20px;
            flex-direction: column;
            overflow: hidden;
            overflow-y: auto;
            li{
                width: 100%;font-size:18px;-webkit-tap-highlight-color: transparent;position: relative;
                .icon-arrow-d,
                .icon-arrow-r{
                    display: none;
                    // width: 22px;height: 22px;background: url(../images/dot-arrow-d.png) no-repeat;
                    // background-size: cover;
                    // transition: all .275s ease-in;
                }
                .m-drop-arrow{
                    width: 36px;height: 36px;background: url(../images/dot-arrow-d.png) no-repeat center center;
                    display: block;
                    background-size: 22px 22px;
                    transition: all .275s ease-in;
                    position: absolute;right: -5px;top: 4px;z-index: 990;
                }
                a{
                    display: block;padding: 0;
                    &.first-level-menu{
                       &::after{
                           display: none;
                       }
                   }
                }
                .drop-content{
                    width: 100%;
                    height: auto;
                    position: static;
                    opacity: 1;
                    padding-top: 0;
                    margin-left: 0;
                    transform: translate3d(0,0,0);
                    display: none;
                    .item{
                        width: 100%;border-bottom: none;line-height: 36px; background-color: transparent;
                        >a{
                            justify-content: space-between;
                        }
                        .m-drop-arrow{
                            top: 0;
                        }
                        .drop__cont{
                            width: 100%;
                            display: none;
                            position: static;opacity: 1;
                            background-color: transparent;
                            a{
                                width: 100%;box-sizing: border-box;border-bottom: none;font-size: 0.75em;
                                padding-left: 60px;
                                &:hover{
                                    background: none;
                                }
                            }
                        }
                        &:hover{background: none;}
                        &.active{
                            .m-drop-arrow{
                                transform: rotate(180deg);
                            }                       
                            .drop__cont{
                                width: 100%;
                            }
                        }
                        &.active{
                            .drop__cont{
                                display: block;
                            }
                        }
                    }
                }
                &.drop-menu{
                    &.active{
                        .first-level-arrow{
                            transform: rotate(180deg);
                        }
                        .drop-content{
                            display: block;
                        }
                    }
                    &:hover{
                        .drop-content{
                            height: auto;
                        }
                    }
                }
                &.lang-switch{
                    margin-left: 0;
                    &::after{
                        display: none;
                    }
                }
            }
        }
        .contact-infor-tabbox{
            position: absolute;left: 20px;right: 20px;bottom: 30px;
            .infor-tab-nav{
                padding-top: 0;
            }
        }
    }
    .top-banner{
        height: 106.75vw;
        min-height: auto;
        margin-top: 61px;
        background-size: 100% auto;
        background-position: center bottom;
        .wrap-box{
            align-items: flex-start;
            justify-content: center;
            text-align: center;
        }
        .inner-cont{
            width: 95%;
            padding-top: 14.667vw;
            h3{
                padding-bottom: 2.135vw;
            }
            .en{
                display: none;
            }
            .zh{
                width:100%;
            }
            .lattice-group{
                top:50px;left:20.5%;
            }
        }
        &.case-details-banner,
        &.banner-news{
            height: 42.5vw;
            min-height: 0;
            max-height: 200px;
            background-size: cover;
            .wrap-box{
                justify-content: flex-start;
                text-align: left;
                align-items: center;
                .inner-cont{
                    padding-top: 0;
                    .pb20{
                        padding-bottom: 0 !important;
                    }
                    h3{
                        text-align: left;
                    }
                }
            }
            .video-bg{
                &::after{
                    display: block;
                }
            }
        }
        &.banner-news{
            .lattice-1{
                display: none;
            }
            .lattice-5{
                right: auto;left: -30px;top: 30%;
            }
        }
        &.banner-index{
            //background-image: url(../images/m-banner-index.jpg);
            height: 110vw;
            .inner-cont{
                padding-top: 8vw;
            }
            .lattice-1{
                bottom: 30%;left: -20px;
            }
            .lattice-2{
                bottom: -20px;
            }
            
        }
        &.banner-index,
        &.banner-about{
            .lattice-group{
                display: none;
            }
        }
        &.case-details-banner{
            background-size: cover;
        }
        .video-bg{
            &::after{
                display: none;
            }
        }
        // .video-bg{
        //     .video{
        //         object-position: 83% 100%;
        //     }
        // }
        // &.banner-case{
        //     .video-bg{
        //         .video{
        //             object-position: 95% 100%;
        //         }
        //     }
        // }
    }
    .top-banner.banner-service,
    .top-banner.banner-case,
    .top-banner.banner-about{
        .lattice-1{
            left: 25px;bottom: auto;top: -65px;
        } 
        .lattice-2{
            bottom: -30px;right: 10px;top: auto;
        }
    }
    .motivation-swiper .swiper-slide .top-banner.banner-motivation{
        .lattice-1{
            left: 25px;bottom: calc(50% - 80px);
        }
        .lattice-2{
            right: 0;bottom: calc(67% - 80px);
        }
        .lattice-4{
            bottom: auto;top: 18.5%;left: 8.625%;
        }
        .lattice-5{
            right: -60px;
        }
    }
    .motivation-swiper .motivation-slide:first-child .wrap-box .lattice-group{
        top: -10px;left: -38px !important;
    }

    .paging-box{
        .item{
            padding: 10px 6px;
        }
        a.page-prev,
        a.page-next{
            .icon{
                width: 20px;height: 20px;margin-top: -10px;
            }
        }
        a.page-prev{
            padding-left: 20px;padding-right: 8px;
        }
        a.page-next{
            padding-right: 20px;padding-left: 6px;
        }
    }

    .footer{
        min-height: 0;
        // background-image: url(../images/bot-bg@2x.jpg);
        .lattice-6{
            left: auto;right: 20px;top: 10px;
        }
        .lattice-group{
            right: auto;left: 0;top: 10%;
        }
        .video-bg{
            top: 60%;
        }
    }
    
    .footer-cont{
        flex-direction: column;
        justify-content: flex-start;
        margin-bottom: 0;
        padding-bottom: 80px;
        .infor-box{ 
            width: 100%;
            padding-top: 100px;
            .WX-code{
                display: none;
            }
        }
    }
    .bot-logo{
        width: 122px;
        margin: 0 auto;
    }
    .form-box{
        width: 100%;
        .form-item{
            width: 48%;padding-right: 0;
        }
    }

}

@media screen and (max-width:480px) {
    :root{
        --f-size-18:12px;
        --f-size-20:12px;
        --f-size-25:13px;
        --f-size-30:16px;
        --f-size-48:20px;
        --f-size-50:20px;
        --f-size-60:24px;
        --f-size-80:36px;
    }
    .lattice-1,.lattice-2,.lattice-3,.lattice-4,.lattice-5,.lattice-6,.lattice-7,.lattice-8,.lattice-group{
        transform: scale(0.5);
    }
    .mb80{
        margin-bottom: 7.5vw !important;
    }
    .top-banner{
        .lattice-1{
            transform-origin: left center;
        } 
        .lattice-2{
            transform-origin: right center;
        }
        &.case-details-banner{
            height: 60vh;
            min-height: 0;
        }
    }
    .inner-cont{
        font-size:20px;
    }
    
    .footer-cont{
        .infor-box{ 
            padding-top:50px;
        }
    }
    .form-box{
        .form-item{
            width:100%
        }
    }
}

@media screen and (max-width:375px) {
    :root{
        --f-size-25:12px;
        --f-size-30:14px;
    }
}

@media screen and (max-width:320px) {
    :root{
        --f-size-18:11px;
        --f-size-20:11px;
        --f-size-25:11px;
        --f-size-30:13px;
        --f-size-48:16px;
        --f-size-50:16px;
        --f-size-60:20px;
        --f-size-80:30px;
    }
    .paging-box{
        .item{
            padding: 10px 4px;
        }
    }
}